▎ 摘　　要

Current work aims at producing reduced graphene oxide(rGO) with highest possible conductivity, starting with graphene oxide(GO) produced by electrochemical exfoliation(ECE) of graphite rod salvaged from C-type primary batteries. Six single-step reduction process were used to reduce GO in the first stage. Following that, most effective three reduction methods, namely water-based reduction(W), hydrothermal reduction(H), and micro-wave reduction(MW), were used in two combinations (W-H-MW and W-MW-H). The conductivity of rGO(W-H-MW) and rGO(W-MW-H) is 43.78Sm(-1) and 28.33Sm(-1) respectively with rGO(W-H-MW) having highest con-ductivity of all selected reduction methods. It is also found that sequence of reduction processes has a big impact on the final product's conductivity, ID/IG ratio, and XRD peak intensity. Characterization by XRD, XPS, TEM, FEG-SEM, FTIR, Raman etc. is used to discuss the findings. Chemical structure, morphology and specific surface area of rGO(W-H-MW) are compared to those of GO and their influence on bulk conductivity of rGO's are discussed.